Water-cooling system



July 23, 1929. H. J. sANDELL 1,721,924

WATER COOLING SYSTEH Filed Aug. 9. 1926 v 4 WwW/f estema July ze, i929.

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maar J.. rsaissrnlntn4 or Asnmnnsora.

. A ammi TENT ori-fica.

warnmcoonme SYSTEM.

My invention relates to water-cnoli'ng sys- 4 tems and has for object tosimplify and improve the eiliciency thereof especially m view of 'therdelivery' of cold water or other liquid to various different floors of or other places vina building thatis supplied with vdrinking water from a common cooling source. Generally stated,`the inventionconsystem installed in a building of ,several stories, the latter being diagrammatically Fig. 2 is a fragmentary view, some parts being sectioned on thelne 2-2of Fig. 1

Aand some .parts being shown in full; and

Fig. 3 is a plan view of the centrifugal pump shown in Fig. 2,V some parts being broken away.

The numerals 4 indicate .the several floors of a building. vThe cooling liquid is herein designed! broadly asthe brine and this is 'contained in a tank or` container fr5 which, for

important reasons and in the preferred embodiment of the invention', is placedon the upper floor or at a high altitude. This elevated container 5 is -provided with a. depending stack 6 that extends preferably to or nearly to the bottom of the lower` tloor and is closed by a head 7 in which, as shown,

' depends a drain pipe `8 normally closed by ered with heavy a cap 9. The container 5 is preferably covlinsulating material lOl-and the stackA 6 with heavy insulating material 10a. p The water is supplied from` a suitable' source, such as aA city water main, through a pipe 11 connected to a water container` shown as in the form of a. small tank 12 located the brine container 5.

From the bottom of this tank 112, a drinking water `delivery pipe 13 extends downward f and through the stack 6 nearly to the bottom thereof. -Above the different loors, the drinking Water delivery pipe 13 is provided with laterally extended branch pipes 14 which,`as shown, extend to faucets 15, but

appucatinn med .august .9, 192s. ysemi m. 12:3",102.

might be connected to suitable normally i fclosed-'water-dispensing devices.

As a means for maintaining low temperature of the brine within the container 5, icemay be used but, preferably, mechanical refrigeration will be employed and, hence, I'

fhave showna refrigeratmg coil 16 placed around the drinking' water container12 and submerged within'the brine y of the container.

To produce a rapid forced circulation of the cold' brine through the stack `6, I provide a brine-circulating device including a vertical return pipe 17. This pipe extends from a point close to the bottom of the stack about one-half filled with brine. Working inthe funnel-shaped head-18 is 4a motordriyen centrifugally acting propeller which,

as preferably constructed, comprises a disclike` top plate 19, and an approximately triangular propeller blade 20. The blade 20 is secured to and depends from the disc 19 i and both are secured to the lower end of the shaft 21 journaled in a suitable bearing 22 shown as supported from the-top of the container 5. 'The shaft 21' is preferably connected 4to the rotor shaft of a very small electric motor 23, also shown as mounted on the top lof the tank 6. This disc 19 is provided with fa downturned ring 19a that de- `fleets the brine downward.

As isevident, when the propeller blade 2O is rotated by the motor, it will, under the action of centrifugal force, throw -the brine from within the funnel-shaped head 18 up` ward, outward and over the top of said head, and the discharged brine will be deflected downward and not splashedagainst the top of the container. When the brine` is displaced from' the head 18, it, of course, seeks its level and, hence. will flow rapidly upward 'through the return pipe 17, thereby producing a forced downward circulation through the stack 6 and upward through thereturn V to obtain cold water; otherwise stated, theret is no place where tlie drinking water can lio accumulate and get warm, even when the systemis notin use.

.- important. In'the above described arrange- 'l ment, it is, of course, obvious that the two the other in the return pipe, will be counter` columns of brine' or cooling liquid, the one in the stack (including the container) and balancedand will normally be -kept at the same `level under the action .of gravity. When, however, the rotor or propeller in the funnel-shaped head 18 is rotated, it'will canse Y lwater to overiiow from said head into they container and, immediately, centrifugal force will become active to again bringthe two `columns of water into balance and at the same level.- In this arrangement, regardless of the height of the column, the propeller or rotor of the centrifugally acting circulating device maykbe operated with very small power, be-

cause all thatisrequired to do isto throw a little liquid out of the head and, under the action of gravity,'water will flow from the lower end of the 'st-ack into the lower endV of the return pipe, and in this way, by the exercise of a very small amount of power, a continuous circulation of the brine orliquid will be'maintained through the column and return pipe., This, ofcourse, keeps the tem-I perature of the brine or cooling liquidI constant'lat all altitudes ordifferent points. The

same action will take place when thleso-calledv column is not truly vertical or where it has long extended horiz'ontalru'ns.

This water-cooling system is, as is evident,- very simple andmay be cheaply and quickly instglled, and by the use thereof, cold drinking water may be supplied'to the different floors Vor elevations at a minimum of cost.

It willbe understood/that the device` described as (the preferred formisv capable of modilications within the'scope of the invention as herein disclosed and claimed. For

\ example,.`the so-called stack or extended brine'tube that leads from the brine container might -be/horizontally extended therefrom to supply different faucets or Water-dispensing devices'located on the same floor or level. It, therefore, follows that the -term` stack is herein used inl/a broad and liberal-sense.

What I claim is:

' 1.: In a water cooling system, a brine con` tainer having ay verticallyx extended stack,

-means for maintaining a lowtemperatur of the brine" in said container, a drinking water pipe extended through said container and stack and having dispensing devices extended ltherefrom at different points, and means for producing a forced circulation of the brine fromsaid brine containerthrough said stack andback to said container.

tainer located at a high elevation and having a depending stack, means 'for maintaining a low temperature of the brine within said container, a drinking water `pipe extended 7'5 f through said container and stack and having dispensing devices extended laterally therefromA at different elevations. p v 3. In-a water coolingy system, a brine container locatedV at a high elevation and having 80.'

a depending stack, means for maintaining a. low temperature of the brine within said container, a drinking water pipe extendedI through said container and stack and havingy 2 dispensing devices extendedlaterally there- S5 from at dierent elevations, and meansfor producing a forced circulation of the brine from said container through said stack and back to said container.

4. In a Water cooling system, a brine container located at a hi h elevation and having a depending` stack,

tainer, a drinking water pipe extended through said container and stack and having VM dispensing devices extended laterally. there` from at different elevations, yand means for v producingv a forced circulation of `the' brine from saidcontainer through said stack and back to said container, said means comprising a` pipe extended along said stack and at jme end thereof a motor-driven centrifugal p'ump at the^upper end of. said pipe.

5. In a 'water coolingsystem, a brine con'- tainer having afvertically extended stack,

means forl maintaining a low temperature of the brine in said container, a drinking water pipebextended th ough said container and stack and having dispensing devices extended therefrom at different points, `and means forkproducingl a forced circulation dflthebrine from said brine'y container through said y stack and back to said container, said means comprising a pipe extended al g said stack,

' a funnel-shaped head at the upper end of said 11'5 propeller arranged.A I

stack, and a motor-driven to rotate within said head. L

6. In a water cooling system, a brine con-` tainer having an extended stack', means forli maintaining a low temperaturel of the brine l in said container', a drinking'waterI pipeexy tending throu h said container 'and\ stack y and having ispensing devices extended a, therefrom at-different points, andmeans for producing a forced circulation from said l brine container through said stack and rback to said container.'`

7. In a Vliquid-tempering system, a stack. and areturn pipe, the latter receiving from the lower portion of said stack/ andfdeliver- 13o 70 2. In a water coolingv system, a brine con-r` u eans for maintaining a low temperature of the brine within said conmarea@ ing into the upper portion thereof? a powerdriven centrifugal liquid-discharglng device located at the upper portion of said return pipe and operative to cause the liquid to overflow from said pipe' into said stack, and drinking Water dispensing means arranged to be cooled by circulation of uid through said stack and return pipe.

8. In a liquid-tempering system, a stack and a return pipe, the latter receiving from the lower portion of said stack and delivering to the upper portion thereof, a power-driven liquidy discharge device at the upper end of said return pipe operative to cause the liquid to overflow from said pipe into said stack, 15

and drinking water dispensing means arranged to be cooled by circulation of fluid through said stack and return pipe, said dispensing means being in heat exchange relation to and parallely with said stack and inl2o HARRY J. SANDELL. 

